That dude had a certain style, cinematic intellectualism with beautiful cinematography. It's definitely not for everyone. Dune is that unique blend of world building, political intrigue, religious exploration, coming of age, and a tiny bit of action. Hard to get all of that in one movie, and the trailers made it seem more Star Wars than Blade Runner.
It's the sort of movie to watch when you're seeking quiet contemplation, not popcorn pulp...